I got the green bus from Portlaoise to Dublin airport twice this month. It arrived in Portlaoise on time but was over 30 minutes late on arrival at the airport on both journeys.
Its advertised as a 2 hour journey but it takes 2.30. There were no holdups or delays of any kind. The timetable is way off and needs revising.
It also made a stop in Kildare town and drove away leaving two women stranded. They were literally walking to the door with their bags clearly going to the airport and the driver drove away when they were standing beside the bus. Absolutely terrible service.